text: import os
  
  import boarding_pass
  
  
  cur_dir = os.path.dirname(os.path.abspath(__file__))
  
  seat_ids = []
  with open(f"{cur_dir}/input") as f:
      for line in f:
          boarding = line.strip()
          seat_ids.append(boarding_pass.get_boarding_pass_seat_id(boarding))
  
  seat_ids.sort()
  
  for i, x in enumerate(seat_ids[:-1]):
      if seat_ids[i + 1] != x + 1:
          print(f"Your seat id is {x + 1}")
          break
      